busybox: built entirely static binary to get around PIE requirement

PIE is only required if an executable links to shared libraries.  This
should be the final piece needed to support Gingerbread (10/2.3.3) through
Lollipop (21/5.0).

closes #145 #145

external/busybox_config

@@ -1,7 +1,7 @@
 #
 # Automatically generated make config: don't edit
 # Busybox version: 1.22.1
-# Fri Aug  1 00:04:47 2014
+# Thu Jan  24 00:05:36 2015
 #
 CONFIG_HAVE_DOT_CONFIG=y
 
@@ -55,7 +55,7 @@ CONFIG_BUSYBOX_EXEC_PATH="/proc/self/exe"
 #
 # Build Options
 #
-# CONFIG_STATIC is not set
+CONFIG_STATIC=y
 # CONFIG_PIE is not set
 # CONFIG_NOMMU is not set
 # CONFIG_BUILD_LIBBUSYBOX is not set
@@ -66,7 +66,7 @@ CONFIG_CROSS_COMPILER_PREFIX="arm-linux-androideabi-"
 CONFIG_SYSROOT="/opt/android-ndk/platforms/android-8/arch-arm"
 CONFIG_EXTRA_CFLAGS="-DANDROID -D__ANDROID__ -DSK_RELEASE -nostdlib -march=armv5te -mtune=xscale -msoft-float -mthumb -mthumb-interwork -Os -fomit-frame-pointer -fno-strict-aliasing -finline-limit=64 -fpic -fno-short-enums -fgcse-after-reload -frename-registers"
 CONFIG_EXTRA_LDFLAGS="-Xlinker -z -Xlinker muldefs -nostdlib -Bdynamic -Xlinker -dynamic-linker -Xlinker /system/bin/linker -Xlinker -z -Xlinker nocopyreloc -Xlinker --no-undefined ${SYSROOT}/usr/lib/crtbegin_dynamic.o ${SYSROOT}/usr/lib/crtend_android.o"
-CONFIG_EXTRA_LDLIBS="dl m c gcc"
+CONFIG_EXTRA_LDLIBS="m c gcc"
 
 #
 # Debugging Options
@@ -715,7 +715,7 @@ CONFIG_FEATURE_CROND_DIR=""
 # CONFIG_MOUNTPOINT is not set
 # CONFIG_MT is not set
 # CONFIG_RAIDAUTORUN is not set
-# CONFIG_READAHEAD is not set
+CONFIG_READAHEAD=y
 # CONFIG_RUNLEVEL is not set
 # CONFIG_RX is not set
 # CONFIG_SETSID is not set