4e93ea8ec2
* config/linux/sunpro.mk
+ Setting CXX for linux/sunpro.mk to make it build .cpp files
without forcing cpp mode explicitly. (suncc seems to do nothing
with .cpp input files.)
Same fix for sunos/sunpro?
* config/rules.mk
+ Added option to override C++ compiler tool name with
$(CXX) variable.
* external/sqlite3/Makefile
* external/libpng/Makefile
* Formatting/cleanup.