Tweak the mysqld-ram script to fix MySQL "Row size too large" errors.

While restoring a ruforum database dump from the staging server into
a ramdisk, I got this error:

	ERROR 1118 (42000) at line 1185: Row size too large (> 8126). Changing some columns to TEXT or BLOB or using ROW_FORMAT=DYNAMIC or ROW_FORMAT=COMPRESSED may help. In current row format, BLOB prefix of 768 bytes is stored inline.

The changes described in the Stack Overflow post made it work for me:

http://stackoverflow.com/questions/15585602/change-limit-for-mysql-row-size-too-large/15585700#15585700
Mount ramdisk on a subdirectory of /dev/shm instead.

If /dev/shm is a symlink to /run/shm (as on Ubuntu 12.04), the mountpoint
check fails and the script mounts another ramdisk over /dev/shm, hiding the
original contents, which causes several desktop applications to misbehave.

This patch may not fix the mountpoint detection, but it should at least stop
it from messing up the rest of the system.
Merge pull request #88 from aptivate/fix_mysql_row_size_too_large

Tweak the mysqld-ram script to fix MySQL "Row size too large" errors.