srand() & simple rand() supporing seed
use js variable for rand_seed
Revert "use js variable for rand_seed"

This reverts commit 3e31f83ac762e34b266b7888aec161bb2b843dd1.
fix rand_r; add rand_r in test_rand
Fix typo in GL library abort function case.
Fix (harmless) out-of-bounds access on vertex attribute indices in GL emulation init when GL_FFP_ONLY is set.
Implement glGetTexEnviv and glGetTexEnvfv in GL emulation mode.
Fix typo in case of abort_noSupport in library_gl.js.
Add test for glGetTexEnv implementation. Fix output of GL_TEXTURE_ENV_COLOR color data from glGetTexEnvfv.
Fix GLImmediate signature after rebase.
Remove unused _Unwind_* functions.
Fix a param-handling bug in normalizeAsm
enable first setjmp test in fastcomp
fix longjmp call by pointer in fastcomp, and enable test_longjmp2
enable more setjmp tests in fastcomp
enable test_longjmp_stacked in fastcomp
fix up final setjmp tests for fastcomp
updates and fixes for test_cases
enable and fix more tests for fastcomp
enable more tests in fastcomp