Changed wording of assertion failure message to emphasize that a failed assertion

means that an error has been detected, not that the assert itself is the error.

--HG--
extra : convert_revision : svn%3Afdd8eb12-d10e-0410-9acb-85c331704f74/trunk%403687

dlib/assert.h

@@ -71,9 +71,9 @@ namespace dlib
     {                                                                       \
         dlib_assert_breakpoint();                                           \
         std::ostringstream dlib__out;                                       \
-        dlib__out << "\n\nError occurred at line " << __LINE__ << ".\n";    \
-        dlib__out << "Error occurred in file " << __FILE__ << ".\n";      \
-        dlib__out << "Error occurred in function " << DLIB_FUNCTION_NAME << ".\n\n";      \
+        dlib__out << "\n\nError detected at line " << __LINE__ << ".\n";    \
+        dlib__out << "Error detected in file " << __FILE__ << ".\n";      \
+        dlib__out << "Error detected in function " << DLIB_FUNCTION_NAME << ".\n\n";      \
         dlib__out << "Failing expression was " << #_exp << ".\n";           \
         dlib__out << std::boolalpha << _message << "\n";                    \
         throw dlib::fatal_error(dlib::EBROKEN_ASSERT,dlib__out.str());      \