New in 2.0:
* Use ucontext.h provided functions for thread creation and switching.
In case those are not available use sigaltstack for thread creation
and sigsetjmp/siglongjump for thread switching, and if sigaltstack
doesn't exist fall back on the old process.S assembly code.
* Simplified pthread support a bit, now it builds and runs on cygwin.
* RPM .spec file fix to allow non-root users to build (Matthew Rich).
* Included AIX process.S assembly, since I don't know the right ifdefs,
it isn't actually part of process.S yet.
* This library is binary compatible with previous releases. But some of
the prototypes of callback functions got cleaned up a bit so that
building against this version of LWP will give some trivially fixable
compile warnings or errors.
New in 1.13:
* Stack switching code for AMD64 processors (Brett Lymn).
full support.
-add partial mips support, but still get:
process.s:177: Warning: MIPS PIC call to register other than $25
process.s:177: Warning: No .cprestore pseudo-op used in PIC code
