added couple of macros:
- EFL_LIB_START(PKG): setup variables and replacements (AC_SUBST),
prints started checks
- EFL_LIB_END(PKG): prints ended checks
- EFL_LIB_START_OPTIONAL(PKG, TEST): wraps EFL_LIB_START() with a
conditional test. defines AC_DEFINE(HAVE_PKG).
- EFL_LIB_END_OPTIONAL(PKG): wraps EFL_LIB_END() with a conditional
test, defines AM_CONDITIONAL(HAVE_PKG).
SVN revision: 81903
instead of replicating common patterns all around, let's use the
common patterns as m4 macros.
EFL_DEPEND_PKG() will use pkg-config and add the dependency.
EFL_OPTIONAL_DEPEND_PKG() will use the former, but also defines
have_XYZ and does the if statement for you.
SVN revision: 80402