Compaq C++ needs "-lm" for linking

[SVN r9295]

status/compiler.cfg

@@ -89,14 +89,14 @@ tru64
 cxx
 Compaq C++ 6.2
 cxx -c -std strict_ansi -D__USE_STD_IOSTREAM -I%include %source
-cxx -o boosttmp.exe -std strict_ansi -D__USE_STD_IOSTREAM -I%include %source
+cxx -o boosttmp.exe -std strict_ansi -D__USE_STD_IOSTREAM -I%include %source -lm
 Compaq C++<br>6.2-024
 
 tru64
 cxx-clib
 Compaq C++ 6.2 with <cXXX> headers
 cxx -c -std strict_ansi -D__USE_STD_IOSTREAM -I$HOME/include -I%include %source
-cxx -o boosttmp.exe -std strict_ansi -D__USE_STD_IOSTREAM -I$HOME/include -I%include %source
+cxx -o boosttmp.exe -std strict_ansi -D__USE_STD_IOSTREAM -I$HOME/include -I%include %source -lm
 Compaq C++<br>6.2-024<br>clib
 
 irix