Dependency update: New Qt check & Arch support

 - New way to check if Qt is installed
 - Arch is now supported for getting dependencies

scripts/check-dependencies.sh

@@ -163,16 +163,16 @@ gmp_sysver()
 qt_sysver()
 {
   if [ "`command -v qtchooser`" ]; then
-    if qtchooser -run-tool=qmake -qt=5 -v >/dev/null 2>&1 ; then
+    qtver=`qtchooser -run-tool=qmake -qt=5 -v 2>&1`
+    if [ $? -eq 0 ] ; then
       export QT_SELECT=5
-      qtpath="`qtchooser -run-tool=qmake -qt=5 -query QT_INSTALL_HEADERS`"/QtCore/qglobal.h 
-    fi
-    if [ ! -e "$qtpath" ]; then
-      if qtchooser -run-tool=qmake -qt=4 -v >/dev/null 2>&1 ; then
-        export QT_SELECT=4
-        qtpath="`qtchooser -run-tool=qmake -qt=4 -query QT_INSTALL_HEADERS`"/QtCore/qglobal.h 
+    else
+      qtver=`qtchooser -run-tool=qmake -qt=4 -v 2>&1`
+      if [ $? -eq 0 ] ; then
+	export QT_SELECT=4
       fi
     fi
+    qtver=`echo "$qtver" | grep "Using Qt version" | awk '{print $4}'`
   else
     export QT_SELECT=5
     qtpath=$1/include/qt5/QtCore/qglobal.h
@@ -194,12 +194,14 @@ qt_sysver()
       qtpath=$1/qt4/include/QtCore/qglobal.h 
     fi
   fi
-  if [ ! -e "$qtpath" ]; then
-    unset QT_SELECT
-    return
+  if [ -z "$qtver" ]; then
+    if [ ! -e "$qtpath" ]; then
+      unset QT_SELECT
+      return
+    fi
+    qtver=`grep 'define  *QT_VERSION_STR  *' $qtpath | awk '{print $3}'`
+    qtver=`echo $qtver | sed s/'"'//g`
   fi
-  qtver=`grep 'define  *QT_VERSION_STR  *' $qtpath | awk '{print $3}'`
-  qtver=`echo $qtver | sed s/'"'//g`
   qt_sysver_result=$qtver
 }
 

scripts/uni-get-dependencies.sh

@@ -148,6 +148,12 @@ get_ubuntu_14_deps()
   get_debian_8_deps
 }
 
+get_arch_deps()
+{
+  pacman -S --noconfirm qt5 qscintilla-qt5 cgal gmp mpfr boost \
+    opencsg glew eigen glib2 fontconfig freetype2 harfbuzz bison flex make
+}
+
 unknown()
 {
  echo "Unknown system type. Please install the dependency packages listed"
@@ -187,6 +193,8 @@ if [ -e /etc/issue ]; then
   get_mageia_deps
  elif [ "`grep -i qomo /etc/issue`" ]; then
   get_qomo_deps
+ elif [ "`grep -i arch /etc/issue`" ]; then
+   get_arch_deps
  elif [ "`command -v rpm`" ]; then
   if [ "`rpm -qa | grep altlinux`" ]; then
    get_altlinux_deps