Portability fixes and cleanups

Move Mac OS X IOKit/DirectHW availability checks in the Makefile from
compiler check to pciutils check.

Print the compiler error messages for feature detection.

Add DOS libpci in the Makefile includes only if a PCI-based programmer
was requested.

Restrict mmap usage in ich_descriptors_tool to Unix style systems.

Build ich_descriptors_tool with the correct .exe extension on
DOS/Windows.

Build ich_descriptors_tool by default on x86. (Patch by Stefan Tauner)

Print the Windows version instead of "unknown machine" on Windows.

Don't #define our own __DARWIN__, use the standard OS X detection
method.

Update the README.

Add more generated files to svn:ignore

Corresponding to flashrom svn r1567.

Signed-off-by: Carl-Daniel Hailfinger <c-d.hailfinger.devel.2006@gmx.net>
Acked-by: Carl-Daniel Hailfinger <c-d.hailfinger.devel.2006@gmx.net>
diff --git a/programmer.h b/programmer.h
index 5109ed9..723374d 100644
--- a/programmer.h
+++ b/programmer.h
@@ -240,6 +240,7 @@
 
 /* print.c */
 #if CONFIG_NIC3COM+CONFIG_NICREALTEK+CONFIG_NICNATSEMI+CONFIG_GFXNVIDIA+CONFIG_DRKAISER+CONFIG_SATASII+CONFIG_ATAHPT+CONFIG_NICINTEL+CONFIG_NICINTEL_SPI+CONFIG_OGP_SPI+CONFIG_SATAMV >= 1
+/* Not needed for CONFIG_INTERNAL, but for all other PCI-based programmers. */
 void print_supported_pcidevs(const struct pcidev_status *devs);
 #endif
 
@@ -637,7 +638,7 @@
 #endif
 
 /* serial.c */
-#if _WIN32
+#ifdef _WIN32
 typedef HANDLE fdtype;
 #else
 typedef int fdtype;