Test programs: Belated change of inclusion spec: Due to the movement …

…of the source files into a library-specific subdirectory, as per #58, there is no longer the risk of clashing with glibc's `printf.h`, so the test programs can use `<foo.h>`-style inclusion rather than `"../path/to/foo.h"`-style.

test/aliasing.c

@@ -1,8 +1,5 @@
 #include <printf_config.h>
-
-// Note: If we include <printf.h>, that will likely get us the
-// the file /usr/include/printf.h on Linux systems
-#include "../src/printf/printf.h"
+#include <printf/printf.h>
 
 int strcmp_(const char* lhs, const char* rhs)
 {

test/test_suite.cpp

@@ -27,8 +27,7 @@
 ///////////////////////////////////////////////////////////////////////////////
 
 #define PRINTF_VISIBILITY static
-// use functions in own test namespace to avoid stdio conflicts
-#include "../src/printf/printf.c"
+#include <printf/printf.c>
 
 // use the 'catch' test framework
 #define CATCH_CONFIG_MAIN