catch overflows in f.subs() where f is a libsingular polynomial
Merge branch 'develop' into trac_12718
fixed SIGSEGV when calling subs on 0
shut up Cython warnings about complicated declarations
Add tides as package.
Added newlines at the end of files
Added package names in spkg-install
Corrected license
First attempt at (trivial) R version update.
New upstream version (3.1)

configure patch adjusted

Broken ARM regexes are now handled by upstream

Adjusted SPKG.txt
More patches fixes

libintl visibility is now handled by upstream

some patches moved
Fixed docstrings

The examples for source(), _source and help() are not satisfying...
Upgrade R to version 3.1

A few issues fixed by Sage-specific patches are now handled bu
upstream source. The relevant patches are gone.

A few other patches have moved a bit.

Three examples (r.source, r._source and r.help) have changed due to
the unavailability of print.anova from the main namespace. The
replacement examples are not quite satisfying.
Various fixes of flaws pointed by Vincent Delecroix (thanks !)

- trailing spaces in src/sage/interfaces/r.py
- lowercasing the source tarball name.
Added a patch to solve some problems with inverse function and temp file names
fixed R's spkg-src
Re-(re-)fixed checksumss.ini and spkg-src
Hand-edited checksum.ini *after* checksum generation (+ thinko in spkg-src).
class CachedSpecialMethod: Fix formatting issue in docstring
cached_method: additional docstring

Added a docstring illustrating the different instances have distinct caches.