liblas 1.6.1
liblas 1.6.1

This commit updates liblas to version 1.6.1 and fixes two variables
that are passed to cmake to locate boost.  It also includes an
option to run the builtin tests, as this library operates a
number of complex deps.  Building is done out of source (oos) in
this formula, and cmake syntax is restructured per its usage,
placing the path after the options.  This passes make test on 64bit
Snow Leopard using XCode-4.0.2, clang-2.0, llvm-2335, and gcc4.2.1.

Signed-off-by: Adam Vandenberg <34c2b6407fd5a10249a15d699d40f9ed1782e98c@gmail.com>

jabenninghoff/homebrew-core,bigbes/homebrew-core,sjackman/homebrew-core,filcab/homebrew-core,makigumo/homebrew-core,JCount/homebrew-core,FinalDes/homebrew-core,mfikes/homebrew-core,cblecker/homebrew-core,forevergenin/homebrew-core,robohack/homebrew-core,mbcoguno/homebrew-core,zyedidia/homebrew-core,ylluminarious/homebrew-core,nandub/homebrew-core,LinuxbrewTestBot/homebrew-core,edporras/homebrew-core,moderndeveloperllc/homebrew-core,chrisfinazzo/homebrew-core,ilovezfs/homebrew-core,stgraber/homebrew-core,bigbes/homebrew-core,jvillard/homebrew-core,mvitz/homebrew-core,smessmer/homebrew-core,jdubois/homebrew-core,jdubois/homebrew-core,zmwangx/homebrew-core,forevergenin/homebrew-core,j-bennet/homebrew-core,mbcoguno/homebrew-core,straxhaber/homebrew-core,aabdnn/homebrew-core,fvioz/homebrew-core,nandub/homebrew-core,sdorra/homebrew-core,mvbattista/homebrew-core,phusion/homebrew-core,mbcoguno/homebrew-core,BrewTestBot/homebrew-core,mvbattista/homebrew-core,uyjulian/homebrew-core,kunickiaj/homebrew-core,battlemidget/homebrew-core,bcg62/homebrew-core,wolffaxn/homebrew-core,bfontaine/homebrew-core,jdubois/homebrew-core,jvehent/homebrew-core,kuahyeow/homebrew-core,reelsense/homebrew-core,rwhogg/homebrew-core,makigumo/homebrew-core,filcab/homebrew-core,Moisan/homebrew-core,spaam/homebrew-core,tkoenig/homebrew-core,ylluminarious/homebrew-core,lasote/homebrew-core,lasote/homebrew-core,adam-moss/homebrew-core,git-lfs/homebrew-core,gserra-olx/homebrew-core,Linuxbrew/homebrew-core,grhawk/homebrew-core,dsXLII/homebrew-core,Moisan/homebrew-core,passerbyid/homebrew-core,maxim-belkin/homebrew-core,kunickiaj/homebrew-core,smessmer/homebrew-core,mfikes/homebrew-core,adamliter/homebrew-core,BrewTestBot/homebrew-core,sdorra/homebrew-core,git-lfs/homebrew-core,grhawk/homebrew-core,mahori/homebrew-core,cblecker/homebrew-core,adam-moss/homebrew-core,moderndeveloperllc/homebrew-core,battlemidget/homebrew-core,stgraber/homebrew-core,sjackman/homebrew-core,Homebrew/homebrew-core,bfontaine/homebrew-core,j-bennet/homebrew-core,FinalDes/homebrew-core,aren55555/homebrew-core,jvillard/homebrew-core,wolffaxn/homebrew-core,adamliter/homebrew-core,aren55555/homebrew-core,lemzwerg/homebrew-core,mvitz/homebrew-core,nbari/homebrew-core,jabenninghoff/homebrew-core,straxhaber/homebrew-core,lembacon/homebrew-core,dsXLII/homebrew-core,rwhogg/homebrew-core,reelsense/homebrew-core,chrisfinazzo/homebrew-core,bcg62/homebrew-core,jvehent/homebrew-core,passerbyid/homebrew-core,lemzwerg/homebrew-core,LinuxbrewTestBot/homebrew-core,edporras/homebrew-core,uyjulian/homebrew-core,Homebrew/homebrew-core,zmwangx/homebrew-core,kuahyeow/homebrew-core,Linuxbrew/homebrew-core,zyedidia/homebrew-core,mahori/homebrew-core,phusion/homebrew-core,spaam/homebrew-core,nbari/homebrew-core,andyjeffries/homebrew-core,lembacon/homebrew-core,bcg62/homebrew-core,andyjeffries/homebrew-core,robohack/homebrew-core,JCount/homebrew-core,tkoenig/homebrew-core,DomT4/homebrew-core,DomT4/homebrew-core,aabdnn/homebrew-core,gserra-olx/homebrew-core,wolffaxn/homebrew-core,fvioz/homebrew-core,ShivaHuang/homebrew-core,ShivaHuang/homebrew-core,mvitz/homebrew-core,maxim-belkin/homebrew-core,lembacon/homebrew-core,ilovezfs/homebrew-core,jvillard/homebrew-core