Update copyright for 2013
Change version to 8.3.0.14
Remove hack to take signal back from R interpreter
Set R_SignalHandlers = 0, the proper way to prevent R from taking signals in the first place
Adjust RPM spec file
change out 8.3.0.13 specific files with 8.3.0.14 ones
fix a few remaining references to the old version
The MacPorts installation has the header filed distributed across two different directories, so there is no single "rincludedir" to query from pkg-config. Instead, do it the proper way and ask pkg-config for the cflags, which should work for all installation variants.
adjust spec file according to what fedora does for postgresql-contrib
Allow use of OUT parameters
Reallow use with PostgreSQL versions without range types

This was accidentally broken recently.