re PR target/42850 (FAIL: g++.dg/abi/forced.C execution test)

	PR target/42850
	Revert:
	2010-01-02  John David Anglin  <dave.anglin@nrc-cnrc.gc.ca>

	* config/pa/t-slibgcc-dwarf-ver (SHLIB_SOVERSION): Bump by two.

From-SVN: r156410

gcc/ChangeLog

+2010-01-31  John David Anglin  <dave.anglin@nrc-cnrc.gc.ca>
+
+	PR target/42850
+	Revert:
+	2010-01-02  John David Anglin  <dave.anglin@nrc-cnrc.gc.ca>
+
+	* config/pa/t-slibgcc-dwarf-ver (SHLIB_SOVERSION): Bump by two.
+
 2010-01-31  Kaveh R. Ghazi  <ghazi@caip.rutgers.edu>
 
 	* doc/install.texi: Update recommended GMP/MPFR/MPC versions.

gcc/config/pa/t-slibgcc-dwarf-ver

 # Set the version number of the shared libgcc library (DWARF2 EH).
 
-SHLIB_SOVERSION = 6
+SHLIB_SOVERSION = 4