Move BTS initial values inside bts.cpp

This way everytime any program or test initiates a BTS object, the
bts_data structure has the same values.

Change-Id: Iffd6eecb1f08bda0091f45e2ef7c9c63b42e10b3
diff --git a/tests/types/TypesTest.err b/tests/types/TypesTest.err
index 92dbe06..2c3c7e1 100644
--- a/tests/types/TypesTest.err
+++ b/tests/types/TypesTest.err
@@ -12,7 +12,7 @@
 TBF(TFI=0 TLLI=0x00000000 DIR=UL STATE=NULL EGPRS) Enabled EGPRS, mode EGPRS
 TBF(TFI=0 TLLI=0x00000000 DIR=UL STATE=NULL EGPRS) Setting Control TS 4
 TBF(TFI=0 TLLI=0x00000000 DIR=UL STATE=NULL EGPRS) Allocated: trx = 0, ul_slots = 10, dl_slots = 00
-TBF(TFI=0 TLLI=0x00000000 DIR=UL STATE=NULL EGPRS) setting EGPRS UL window size to 64, base(0) slots(1) ws_pdch(0)
+TBF(TFI=0 TLLI=0x00000000 DIR=UL STATE=NULL EGPRS) setting EGPRS UL window size to 64, base(64) slots(1) ws_pdch(0)
 ************** Test with empty window
 ************** Test with 1 lost packet
 ************** Test with compressed window