Description of problem:
When trying to use php-mailparse, which depends on some mbstring
functions, the module fails to load with an "undefined symbol:
mbfl_convert_filter_new" error.

Version-Release number of selected component (if applicable):
php-4.3.8-2.1 and php-mbstring-4.3.8-2.1

How reproducible:
Always.

Steps to Reproduce:
1. Recompile mailparse.so from http://pecl.php.net/ (compiles fine)
2. Load the module after the mbstring.so one
3. Run "php" on the command line
  
Actual results:
$ php
PHP Warning:  Unknown(): Unable to load dynamic library
'/usr/lib/php4/mailparse.so' - /usr/lib/php4/mailparse.so: undefined
symbol: mbfl_convert_filter_new in Unknown on line 0

Expected results:
$ php


Additional info:
When trying to load the mbstring module twice, I get plenty of
warnings like these :
PHP Warning:  Function registration failed - duplicate name -
mb_convert_case in Unknown on line 0
PHP Warning:  Function registration failed - duplicate name -
mb_strtoupper in Unknown on line 0
PHP Warning:  Function registration failed - duplicate name -
mb_strtolower in Unknown on line 0
PHP Warning:  Function registration failed - duplicate name -
mb_language in Unknown on line 0
[...]
None of which are mbfl_convert_* names. Running "strings" on the
mbstrings.so library does show many mbfl_convert_* names, though.

This is with the errata php, the original 4.3.6 (where mbstring was
built-in) worked fine.

I've reported this bug first to the upstream mailpase developer, and
he is not aware of any incompatibility with php 4.3.8 and his
conclusion was that the Fedora Core 2 errata is broken wrt mbstring.