Ignore bioseg.so

Reword the README to put the USE_PGXS=t installation method first.

Change by Matthew Wakeling: changed procedures to the new calling conventions
which improves performance.

Fix from Matthew Wakeling: Changed the calling convention version of one of
the methods, to make index lookups slightly faster.

Performance fixes by Matthew Wakeling.

Lower the cost functions to encourage the planner to use the index.

Fixed warnings about printf args having the wrong type.

Documentation fix.

Fixed compilation error.

Fix bioseg_create() to check that the lower bound in range.

Comment fix.

Give an example in the README of using a function index with bioseg_create().

Don't mention sort-segments.pl in the README - it doesn't exist.

Removed redundancy from README.

Added missing file.

Allow negative coordinates when using bioseg0.

Fixed typo in README.

Fixed typo in README.

Updated Changes files.

Mention subversion checkout in the README.

Documentation fix.

Documentation fixes.

Documentation fix.

Fixed email address.

Mention the bioseg wiki in the USAGE section of the README.

Updated bioseg definition SQL to match change [11].

Fixed INTERBASE_COORDS tests.

Added a changelog.

Changed bioseg.sql.in to match changes of seg.sql.in in core PostgreSQL.
Changelog:
 "Support functions for index opclasses should be immutable.
  Found by running opr_sanity on contrib modules."

Added svn:ignore property.

Added missing bioseg.sql

README improvements.

Check in bioseg0.sql

Small documentation fix.

Moved all files to trunk directory.

Made trunk, brach and tag subdirectories.