also cleanup useless double checking for MACOSX
and remove unneeded AUGMENT_LIBRARY_PATH

Recognize the arm-linux-androideabi "triplet". (Actually I doubt that
is a well-formed triplet at all, what are the Google people smoking?)

Allow longer lines in pkgdata.cpp as the compiler command line gets
quite long for cross-compilation to Android.

Add the proper assembly source file format for Android to pkg_genc.c
and use that.

Probably a good idea to use --disable-dyload on Android (and iOS).

Tweak gcc flags used for Android a bit to work around some Android C
header weirdness related to strictness and 64-bit types.

o test.mo ./de.po; \
../.././install-sh -c -d de/LC_MESSAGES; \
cp -f test.mo de/LC_MESSAGES
/bin/sh: line 1: o: command not found
cp: test.mo: No such file or directory
make[5]: [test.mo] Error 1 (ignored)

fixes #i111496# (meta), #i111498# & #i111500#
(along with the similar commits to the other repos)

please guys'n'gals:
Use dmake create_patch when updating/creating new patches. And when
replacing patches instead of adding ones, use solenv/bin/patch_sanitizer.pl

Yeah, just build all the unneeded stuff (the executables like the
msgfmt command and their support libraries) in this case too, for
now. (We obviously won't be able to run ppc exectuables when
cross-compiling from Intel Mac.)

Ugh, the patch for libpng is silly, but I didn't bother now fixing the
silliness, just added the case for iOS, too.

AKA: fix compiling libcroco against SDK-libxml (Mac)