libdfp: Added definitions for the number of digits in strings.

This patch defines the lenght of strings with the digits of a
_Decimal, and use this on the code. This fixes a bug in numdigits
function.
libdfp: x86 support added to test-bfp-conversions.

This patch adds code to handle the difference between Intel and PowerPC
long double type.
libdfp: Add missing ChangeLog

This patch adds the missing ChangeLog for commit
790509ba82ce372ff921e49352bb7f9efa058a1b.
libdfp: Add missing ChangeLog

This patch adds the missing ChangeLog for commit
eab6a953b9a5520005c50838519e4872820a3048.
libdfp: Add missing ChangeLog

This patch adds the missing ChangeLog for commit
bbcfd7e4ca6c22b22e2ff76b5d658f018e77903f.
libdfp: Add missing ChangeLog

This patch adds the missing ChangeLog for commit
ee0da1f4a0b3971f0e97f9864d8fd7e39d202aad
libdfp: Add missing ChangeLog

This patch adds the missing ChangeLog for commit
b8c6c2f5bad52e4819c86fef73903c9548586999.
libdfp: Add missing ChangeLog

This patch adds the missing ChangeLog removed in commit
b4f2dc570042dcce7993db0f623cace276914f84.
Merge of the branch 'master' of github.com:libdfp/libdfp into rzinsly-master

Conflicts:
	ChangeLog
	tests/test-bfp-conversions.c