MEMORY POOL: Add function to clear pool.
Merge pull request #37 from fnoble/memory_pool_clear

Add function to clear memory pools
FLOAT KF: Remove the old float filter.
LINEAR ALGEBRA: Move eye and triu to linear_algebra and add unit tests.
LINEAR ALGEBRA: Move UDU decomp into LA and fix bug! Unit tests FTW.
Merge pull request #41 from fnoble/remove_old_kf

Remove old Kalman Filter
DGNSS: Remove parameters no longer needed, used by old KF.
Fixed making dd measurements, documented too
Merge pull request #43 from imh/sat_not_found_error

Fixes sat not found error
Switched carrier PLL to use old-style parameters
Remove old gain defines.
Documented make_dd_measurements_and_sdiffs.
Fixed bug where ref sat too far to the end of sdiffs not found when making DD measurements for IAR.
Merge branch 'master' of git://github.com/swift-nav/libswiftnav into propogation

Conflicts:
	tests/CMakeLists.txt
	tests/check_main.c
	tests/check_suites.h