Refactor: Relocated console, FS1, and help to libdoomsday

This sizable commit relocates a couple of the most central Doomsday
subsystems into the libdoomsday library: console, FS1, and help.

Very little functionality has actually changed, though:

- Uri is now in libdoomsday, so it needs to use a callback to
  resolve symbols in the URI.

- FS1 depends on ResourceClass, however the resource subsystem is not
  ready for relocation; a callback was added to allow getting a
  ResourceClass instance based on its ID number.

The old console implementation has been cleaned up by splitting it
into several source files.

These changes enable relocating other subsystems that rely on console
and FS1.

doomsday/api/api_console.h

@@ -37,6 +37,7 @@ DENG_API_TYPEDEF(Con)
     void (*AddCommandList)(ccmdtemplate_t const* cmdList);
     void (*AddVariableList)(cvartemplate_t const* varList);
 
+    /// @return  Type of the variable associated with @a path if found else @c CVT_NULL
     cvartype_t (*GetVariableType)(char const* name);
 
     byte (*GetByte)(char const* name);
@@ -45,7 +46,19 @@ DENG_API_TYPEDEF(Con)
     char const* (*GetString)(char const* name);
     Uri const* (*GetUri)(char const* name);
 
+    /**
+     * @copydoc CVar_SetInteger()
+     * @param svflags  @ref setVariableFlags
+     */
     void (*SetInteger2)(char const* name, int value, int svflags);
+
+    /**
+     * Changes the value of an integer variable.
+     * @note Also used with @c CVT_BYTE.
+     *
+     * @param var    Variable.
+     * @param value  New integer value for the variable.
+     */
     void (*SetInteger)(char const* name, int value);
 
     void (*SetFloat2)(char const* name, float value, int svflags);

doomsday/api/dd_share.h

@@ -143,7 +143,7 @@ enum {
     DD_UNUSED1,
     DD_MOUSE_INVERSE_Y,
     DD_FULLBRIGHT, ///< Render everything fullbright?
-    DD_CCMD_RETURN,
+    DD_CCMD_RETURN_obsolete,
     DD_GAME_READY,
     DD_DEDICATED,
     DD_NOVIDEO,

doomsday/client/client.pro

@@ -204,11 +204,8 @@ DENG_HEADERS += \
     include/client/clpolymover.h \
     include/clientapp.h \
     include/color.h \
-    include/con_bar.h \
     include/con_config.h \
-    include/con_main.h \
     include/dd_def.h \
-    include/dd_help.h \
     include/dd_loop.h \
     include/dd_main.h \
     include/dd_pinit.h \
@@ -233,17 +230,6 @@ DENG_HEADERS += \
     include/edit_bias.h \
     include/edit_map.h \
     include/face.h \
-    include/filehandle.h \
-    include/filesys/file.h \
-    include/filesys/filehandlebuilder.h \
-    include/filesys/fileinfo.h \
-    include/filesys/fs_main.h \
-    include/filesys/fs_util.h \
-    include/filesys/lumpindex.h \
-    include/filesys/manifest.h \
-    include/filesys/searchpath.h \
-    include/filesys/sys_direc.h \
-    include/filetype.h \
     include/game.h \
     include/games.h \
     include/gl/gl_defer.h \
@@ -335,7 +321,7 @@ DENG_HEADERS += \
     include/resource/fontscheme.h \
     include/resource/hq2x.h \
     include/resource/image.h \
-    include/resource/lumpcache.h \
+    include/resource/manifest.h \
     include/resource/material.h \
     include/resource/materialarchive.h \
     include/resource/materialmanifest.h \
@@ -355,9 +341,6 @@ DENG_HEADERS += \
     include/resource/texturescheme.h \
     include/resource/texturevariantspec.h \
     include/resource/tga.h \
-    include/resource/wad.h \
-    include/resource/zip.h \
-    include/resourceclass.h \
     include/settingsregister.h \
     include/sys_system.h \
     include/tab_anorms.h \
@@ -386,6 +369,7 @@ DENG_HEADERS += \
     include/ui/dialogs/videosettingsdialog.h \
     include/ui/dialogs/vrsettingsdialog.h \
     include/ui/editors/rendererappearanceeditor.h \
+    include/ui/progress.h \
     include/ui/widgetactions.h \
     include/ui/widgets/busywidget.h \
     include/ui/widgets/consolecommandwidget.h \
@@ -428,7 +412,6 @@ DENG_HEADERS += \
     include/updater/updateavailabledialog.h \
     include/updater/updatersettings.h \
     include/updater/updatersettingsdialog.h \
-    include/uri.hh \
     include/versioninfo.h \
     include/world/blockmap.h \
     include/world/bsp/bsptreenode.h \
@@ -528,6 +511,8 @@ else:unix {
 # Platform-independent sources.
 SOURCES += \
     src/alertmask.cpp \
+    src/api_console.cpp \
+    src/api_filesys.cpp \
     src/api_uri.cpp \
     src/audio/audiodriver.cpp \
     src/audio/audiodriver_music.cpp \
@@ -551,11 +536,7 @@ SOURCES += \
     src/client/clpolymover.cpp \
     src/clientapp.cpp \
     src/color.cpp \
-    src/con_bar.cpp \
     src/con_config.cpp \
-    src/con_data.cpp \
-    src/con_main.cpp \
-    src/dd_help.cpp \
     src/dd_loop.cpp \
     src/dd_main.cpp \
     src/dd_pinit.cpp \
@@ -566,16 +547,6 @@ SOURCES += \
     src/def_read.cpp \
     src/edit_bias.cpp \
     src/face.cpp \
-    src/filesys/file.cpp \
-    src/filesys/filehandle.cpp \
-    src/filesys/fileid.cpp \
-    src/filesys/fs_main.cpp \
-    src/filesys/fs_scheme.cpp \
-    src/filesys/fs_util.cpp \
-    src/filesys/lumpindex.cpp \
-    src/filesys/manifest.cpp \
-    src/filesys/searchpath.cpp \
-    src/filesys/sys_direc.cpp \
     src/game.cpp \
     src/games.cpp \
     src/gl/dgl_common.cpp \
@@ -669,6 +640,7 @@ SOURCES += \
     src/resource/fontscheme.cpp \
     src/resource/hq2x.cpp \
     src/resource/image.cpp \
+    src/resource/manifest.cpp \
     src/resource/material.cpp \
     src/resource/materialanimation.cpp \
     src/resource/materialarchive.cpp \
@@ -687,8 +659,6 @@ SOURCES += \
     src/resource/texturescheme.cpp \
     src/resource/texturevariant.cpp \
     src/resource/tga.cpp \
-    src/resource/wad.cpp \
-    src/resource/zip.cpp \
     src/settingsregister.cpp \
     src/sys_system.cpp \
     src/tab_tables.c \
@@ -722,6 +692,7 @@ SOURCES += \
     src/ui/mouse_qt.cpp \
     src/ui/nativeui.cpp \
     src/ui/p_control.cpp \
+    src/ui/progress.cpp \
     src/ui/styledlogsinkformatter.cpp \
     src/ui/sys_input.cpp \
     src/ui/ui2_main.cpp \
@@ -756,7 +727,6 @@ SOURCES += \
     src/updater/updater.cpp \
     src/updater/updatersettings.cpp \
     src/updater/updatersettingsdialog.cpp \
-    src/uri.cpp \
     src/world/api_map.cpp \
     src/world/api_mapedit.cpp \
     src/world/blockmap.cpp \