PRBS: a Pseudo-random binary sequence (PRBS) generator class.

Implemeted with a Galois LFSR for speed and flexibility compared to Fibonacci version.

Aliases for three popular PRBS' are added for convenience - PRBS9, PRBS15 and PRBS64.

Note that we can't test PRBS64 completely, because the sequence is too long to
be generated.

Change-Id: Ib5331ba5d0b5819929541686fdd87905e2177b74
diff --git a/.gitignore b/.gitignore
index d1a0b33..d560f19 100644
--- a/.gitignore
+++ b/.gitignore
@@ -15,6 +15,7 @@
 CommonLibs/TimevalTest
 CommonLibs/URLEncodeTest
 CommonLibs/VectorTest
+CommonLibs/PRBSTest
 
 # automake/autoconf
 *.in