Initial android support (#17)

* Upload Android armv7 libs

* Fix debug build

* utlvector: fix undefined behavior

* wscript: add --use-ccache option

* wscript: store ccache in a separate directory

* Propertly use gl4es

* fontconfig: fix font detection

* [android]remove fontconfig dependency

* Add build guide for other platforms

Co-authored-by: JusicP <slender87844@gmail.com>
Co-authored-by: nillerusr <nillerusr@users.noreply.github.com>

vstdlib/wscript

@@ -40,6 +40,9 @@ def build(bld):
 
 	libs = ['tier0','tier1']
 
+	if bld.env.DEST_OS == 'android':
+		libs += ['ANDROID_SUPPORT']
+
 	install_path = bld.env.LIBDIR
 
 	bld.shlib(