Prereqs:
Get the right libs, tools and stuff in Linux. (Autoconf2.13)
Needed to be done first time:
1. Setup and crosscompile Haiku.
2. Run crosscompiler setup script.
3. Setup path for crosscompiler and some of the Linux-versions of Haiku tools (mimeset, xres)
5a. Patch configure.in scripts in mozilla root and nsprpub.
5b. Run autoconf2.13 to generate configure scripts in mozilla root.
6. Patch code to be able to compile.

7. Crosscompile libIDL and glib.

8. Mozilla's Packaging script needs a change to handle crosscompiling.

Before building:
1. Setup path for crosscompiler and some of the Linux-versions of Haiku tools (mimeset, xres)
2. Build as normal.