Libtool-2.2 introduces new restrictions. So now it does not allow LT_*
variables as it includes marcros:
m4_pattern_forbid([^_?LT_[A-Z_]+$])
Rename the LT_ variables to LIBT_ to work around this restriction.
Set FC_DEFAULT_FONTS on Win32 to the WINDOWSFONTDIR token.
Move the LIBRARY and VERSION lines to the end, not to confuse libtool,
which expects the EXPORTS line to be the first. Add FcConfigEnableHome.