-I interactive mode now working.
-I interactive mode now working.

(gdb) b:compiler [827] % chpl -I --gdb
Using host libthread_db library "/lib64/tls/libthread_db.so.1".
Breakpoint 1 at 0x51a3bc: file misc.cpp, line 23.
(gdb) r
(chpl) writeln(1);;
1
(chpl) writeln(1 + 2);;
3
(chpl) :exit

Program exited normally.
(gdb)


git-svn-id: 88467cb1fb04b8a755be7e1ee1026be4190196ef@5229 3a8e244f-b0f2-452b-bcba-4c88e055c3ca

CoryMcCartan/chapel,CoryMcCartan/chapel,hildeth/chapel,hildeth/chapel,chizarlicious/chapel,CoryMcCartan/chapel,chizarlicious/chapel,chizarlicious/chapel,sungeunchoi/chapel,sungeunchoi/chapel,chizarlicious/chapel,sungeunchoi/chapel,hildeth/chapel,sungeunchoi/chapel,sungeunchoi/chapel,hildeth/chapel,CoryMcCartan/chapel,sungeunchoi/chapel,hildeth/chapel,chizarlicious/chapel,hildeth/chapel,chizarlicious/chapel,chizarlicious/chapel,CoryMcCartan/chapel,CoryMcCartan/chapel,CoryMcCartan/chapel,sungeunchoi/chapel,sungeunchoi/chapel,hildeth/chapel