add BigInt prevpow2/nextpow2 (fix #4814)
fix #4822, not correctly freeing alloca space around ccalls

this is a critical bug fix
Merge pull request #4820 from stevengj/nextpow2

add BigInt prevpow2/nextpow2 (fix #4814)
allow taking inverses mod 1
printf: clearer error when someone tries to use "%g".
doc/manual: fix code formatting.
Merge remote-tracking branch 'origin/master' into kf/asan
Address Linux build failure
Merge pull request #4716 from JuliaLang/kf/asan

WIP: Add flag to build LLVM with address sanitizer
Oopps, did not mean to include this, sry
disaster recovery
VERSION: 0.2.0
Merge branch 'release-0.2'
Provides LAPACK.gesvx! wrapper

Includes simplified method for the no-equilibration, no-transpose calculation
Provides simplified LAPACK.gesvx! wrapper

Also changes warning of exact singularity to error.
Merge pull request #4594 from JuliaLang/cjh/gesvx

Provide linear solver with error estimates - wrap LAPACK.gesvx!
Consistently use quotes in parsing errors

Use quotes around parsed expressions to make understanding
messages easier.