mktime() == -1 buglet

git-svn-id: https://svn.r-project.org/R/trunk@62622 00db46b3-68df-0310-9c12-caf00c1e9a41
blunder: as.POSIXct fix would allow 1969-12-31 23:59:XX with invalid XX

git-svn-id: https://svn.r-project.org/R/trunk@62623 00db46b3-68df-0310-9c12-caf00c1e9a41
POSIX 2008 requires cp -R but not cp -r

git-svn-id: https://svn.r-project.org/R/trunk@62624 00db46b3-68df-0310-9c12-caf00c1e9a41
POSIX prefers rm -R to rm -r

git-svn-id: https://svn.r-project.org/R/trunk@62626 00db46b3-68df-0310-9c12-caf00c1e9a41
pacify clang 3.2

git-svn-id: https://svn.r-project.org/R/trunk@62627 00db46b3-68df-0310-9c12-caf00c1e9a41
Make R_licence_db and R_license_db_vars dynamic variables which can be
rebuilt at run time using R_license_db_refresh_cache(), which allows the
specification of additional license file paths as arguments or via the
environment variable R_LICENSE_DB_PATHS.
Have analyze_license() now also compute the expansions of the license
components, and returns both components and expansions.

git-svn-id: https://svn.r-project.org/R/trunk@62629 00db46b3-68df-0310-9c12-caf00c1e9a41
Improve test for assigments to the global environment.

git-svn-id: https://svn.r-project.org/R/trunk@62630 00db46b3-68df-0310-9c12-caf00c1e9a41
tweak

git-svn-id: https://svn.r-project.org/R/trunk@62632 00db46b3-68df-0310-9c12-caf00c1e9a41
more detailed instructions

git-svn-id: https://svn.r-project.org/R/trunk@62634 00db46b3-68df-0310-9c12-caf00c1e9a41
use explicit configure tests

git-svn-id: https://svn.r-project.org/R/trunk@62636 00db46b3-68df-0310-9c12-caf00c1e9a41
HAVE_OPENMP does not respect --disable-openmp

git-svn-id: https://svn.r-project.org/R/trunk@62637 00db46b3-68df-0310-9c12-caf00c1e9a41
fallback come should a compiler not comply with C99/C11

git-svn-id: https://svn.r-project.org/R/trunk@62638 00db46b3-68df-0310-9c12-caf00c1e9a41