Added showdebug command.
Also:
* Added an exported constructor to RChildProcess so the iProcess handle was set to zero on construction.
* Fixed bug in fshell_builddocs script that created HTML relative links with backslashes instead of forward slashes.
---------------------------- Test U1 ------------------------------
1:X one
2:X two 3:X three 4:X four
5:X five
6:X six
7:X seven
8:X eight
9:X nine
10:X ten
---------------------------- Test U2 ------------------------------
12-Before 111
13-Before 222
14-Before 333
15:Match
16-After 111
17-After 222
18-After 333