[liblua] Enable Position Independent Code by default.

[connor horman <chorman64@...>]

Hello all,

I maintain a fork of lua to patch the makefile to include -fPIC, so I could link liblua.a to a shared library. I was wondering if there was a reason this wasn’t default, along with why only the executable(s) and the static lua was built by default? It seems like a limitation, as it prevents using lua in shared libraries, only in static libraries, or top level executables.

Thank you in advance for any input.