Saved configuration names can only contain letters or numbers

This fix addresses Trac issues #30.  GtkTerm fails to delete a saved
configuration if its name contains spaces.  Now, no spaces are allowed
when entering the configuration name.
Auto-conf fixes courtesy of benjarobin.

The PO directory now compiles without errors.
Commit of auto-generated files
Changing default font to "Monospace, 12" - GtkTerm now uses the system
default monospace font.  Resolves ticket #27.
Merge branch 'master' of ssh://git.fedorahosted.org/git/gtkterm
Any number of bytes can be sent with Send Hexadecimal (ticket #39)

Send_Hexadecimal now uses the glib function g_strsplit_set, rather
than parsing the string manually.  The old function did not take
the seperators into account when allocating a temporary buffer.
Merge branch 'master' of ssh://git.fedorahosted.org/git/gtkterm
Send_Hexadecimal now buffers its output before sending