adjust for Tru64 Unix

[SVN r8525]

libs/compiler.cfg

@@ -45,14 +45,14 @@ KCC -c --strict_warnings -I%include %source
 KCC -o boosttmp.exe --strict_warnings -I%include %source
 KAI<br>KCC<br>3.4g
 
-osf1V5
+tru64
 cxx
 Compaq C++ 6.0
 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
 Compaq C++<br>6.2-024
 
-osf1V5
+tru64
 cxx-clib
 Compaq C++ 6.0 with <cXXX> headers
 cxx -c -std strict_ansi -D__USE_STD_IOSTREAM -I$HOME/include -I%include %source

libs/regression.cpp

@@ -117,7 +117,7 @@ void replace_environment(std::string & s)
 void getstringline( std::ifstream & is, std::string & s )
 {
   do {
-    std::getline( is, s, '\n' );    // third argument required by IRIX
+    std::getline( static_cast<std::istream&>(is), s ); // cast required by IRIX
   } while ( is.good()
 	    && (!s.size() || (s.size() >= 2 && s[0] == '/' && s[1] == '/')) );
 }