fixed some non-explicit conversions, so that make distcheck runs on mac yosemite

test/auto_test.cxx

@@ -51,14 +51,14 @@ public:
       CPPUNIT_ASSERT_EQUAL(-1, (mrw::AutoFile::Type)a); // init as -1
       i = a = open((std::string(mrw::ifelse(getenv("srcdir"), "."))
                     +"/test.dat").c_str(), O_RDONLY);
-      CPPUNIT_ASSERT(i==a && a>0); // file is now open
+      CPPUNIT_ASSERT(i==(int)a && (int)a>0); // file is now open
       mrw::AutoFile b(a);
-      CPPUNIT_ASSERT(a==-1 && i==b); // b has taken ownership
+      CPPUNIT_ASSERT((int)a==-1 && i==(int)b); // b has taken ownership
       CPPUNIT_ASSERT(read(b, &c, 1)==1 && c=='H'); // file is good
       mrw::AutoFile cc(i);
-      CPPUNIT_ASSERT(i==b && b==cc); // ooops, two owner!
+      CPPUNIT_ASSERT(i==(int)b && (int)b==(int)cc); // ooops, two owner!
       cc.release();
-      CPPUNIT_ASSERT(i==b && cc==-1); // it's ok now
+      CPPUNIT_ASSERT(i==(int)b && (int)cc==-1); // it's ok now
       b = open("test.dat", O_RDONLY);
       //close(i);
       CPPUNIT_ASSERT_EQUAL((ssize_t)-1, read(i, &c, 1)); // old file is closed

test/exec_test.cxx

@@ -39,7 +39,6 @@
 
 */
 #include <mrw/exec.hxx>
-#include <mrw/stacktrace.hxx>
 #include <mrw/stdext.hxx>
 #include <cppunit/TestFixture.h>
 #include <cppunit/ui/text/TestRunner.h>

test/stdext_test.cxx

@@ -28,7 +28,6 @@
 #include <mrw/map.hxx>
 #include <mrw/multiset.hxx>
 #include <mrw/multimap.hxx>
-#include <mrw/stacktrace.hxx>
 #include <mrw/stdext.hxx>
 #include <cppunit/TestFixture.h>
 #include <cppunit/ui/text/TestRunner.h>
@@ -154,7 +153,6 @@ class StdExtTest: public CppUnit::TestFixture {
       try {
         s<<1<<2<<3<<4<<5<<6<<7<<8<<8;
       } catch (mrw::invalid_argument& e) {
-        mrw::StackTrace::createSymtable();
         exc=true;
       }
       CPPUNIT_ASSERT(exc);