build: big Android build system refactor; we now attempt to build

an apk for each project.

neercs/Makefile.am

@@ -1,9 +1,11 @@
 
 include $(top_srcdir)/build/autotools/common.am
 
+if !USE_ANDROID
 if BUILD_NEERCS
 bin_PROGRAMS = neercs
 endif
+endif
 
 neercs_SOURCES = \
     neercs.cpp neercs.h \