Force parser Eiffel classes to be regenerated by geyacc.
* Fixed bug in DS_HASH_TABLE when the calls to `key_equality_tester'
  in `search_position' trigger the invariant which internally calls
  `search_position'. This routine was not written to be re-entrant.
* Fixed bug in features `force_last_new' and `put_last_new' of
  DS_HASH_TABLE when the call is not preceded by a call to
  `search_position' with the same key.
Fixed bug in void-safe mode.
Fixed pathname resolution (variable expansion) when reading <assembly> entries in ECF files.
Started to replace assignment attempts by object-tests to make ISE 7.1 happy.
For compatibility with ISE's tools, define the environment variable "$ISE_LIBRARY" to $ISE_EIFFEL" if not set yet.
Added library dependency information in Xace file.
Merge branch 'master' into dev
Merge pull request #2 from pgcrism/master

Math/Decimal Void-safe
Started to replace assignment attempts by object-tests to make ISE 7.1 happy.
Improved void-safe version of the decimal library.
Fixed bug introduced in previous commit when getting rid of assignment attempts.
Cleanup of documentation for the argument parse library, removed old TODO
sections that are not necessary, because reading the code is easier than
explaining what to do.
Cleanup of documentation for the argument parse library, removed old TODO
sections that are not necessary, because reading the code is easier than
explaining what to do.
Void-safe library ECF files.
Fix GCC linker options order

GCC 4.6 has become fussier about the order of its options.
The -l options must now appear after the object files.

Without this patch, I have a GGC error when compiling a
custom project with gec:

 epm1.o: In function `T163f16':
 epm1.c:(.text+0xa9f): undefined reference to `pow'
 epm1.c:(.text+0xad4): undefined reference to `pow'

Tested on Ubuntu 12.04 LTS with GCC 4.6.3.

Links :
* http://nick.zoic.org/art/etc/gcc-linker-libs.html
* http://ubuntuforums.org/showthread.php?p=11339484
Synchronized with FreeELKS svn#711, except for the string and file classes.
Merge pull request #5 from oligot/gcc-link

Fix GCC linker options order
Fix GCC linker options order.
Merge pull request #4 from schoelle/master

Just some cleanup of the argument documentation