fix #76 - compile cleanups

[claud9999]

Closes #76

This simplifies the compile scripts and improves them:

• relying on setCompilePath.sh for most env vars
• using $INSTALLDIR rather than $INSTALL (which confuses GNU libtool.)
• using set -e in all scripts to have them fail if any step fails

Note that busybox no longer has traceroute--it should be added back in when compile issues are resolved.

I am sure there's more improvements that can be made (I am guessing there's still some static linking that is unnecessary, would be good to add "strip" to most everything [maybe have a top-level config whether to build "debug" or "release" versions], relying more on tool-provided make install installation, etc.)

[claud9999]

Testing on cam, cam does not come up. Will work through what's going on.

[claud9999]

Testing on cam, cam does not come up. Will work through what's going on.

was a bug in the dropbear compile.sh, fix committed...camera boots and everything seems good...

[nik0]

Thanks !