Merge back @vlj's local patches of vcpkg

win32/config-msvc.mak

diff --git a/win32/config-msvc.mak b/win32/config-msvc.mak
index 88ae071..d8b851d 100644
--- a/win32/config-msvc.mak
+++ b/win32/config-msvc.mak
@@ -12,7 +12,11 @@
 HB_GOBJECT_DEP_LIBS = gobject-2.0.lib $(HB_GLIB_LIBS)
 
 # Freetype is needed for building FreeType support and hb-view
+!if "$(CFG)" == "debug"
+FREETYPE_LIB = freetyped.lib
+!else
 FREETYPE_LIB = freetype.lib
+!endif
 
 # Cairo is needed for building hb-view
 CAIRO_LIB = cairo.lib
@@ -125,6 +129,9 @@
 
 # Enable freetype if desired
 !if "$(FREETYPE)" == "1"
+!if "$(FREETYPE_DIR)" != ""
+HB_CFLAGS = $(HB_CFLAGS) /I$(FREETYPE_DIR)
+!endif
 HB_DEFINES = $(HB_DEFINES) /DHAVE_FREETYPE=1
 HB_SOURCES = $(HB_SOURCES) $(HB_FT_sources)
 HB_HEADERS = $(HB_HEADERS) $(HB_FT_headers)

win32/detectenv-msvc.mak

diff --git a/win32/detectenv-msvc.mak b/win32/detectenv-msvc.mak
index 83d8786..41f4bd0 100644
--- a/win32/detectenv-msvc.mak
+++ b/win32/detectenv-msvc.mak
@@ -130,6 +130,9 @@
 CFLAGS = $(CFLAGS_ADD) /W3 /Zi /I.. /I..\src /I. /I$(PREFIX)\include
 
 LDFLAGS_BASE = $(LDFLAGS_ARCH) /libpath:$(PREFIX)\lib /DEBUG
+!if "$(ADDITIONAL_LIB_DIR)" != ""
+LDFLAGS_BASE = $(LDFLAGS_ARCH) /libpath:$(ADDITIONAL_LIB_DIR)
+!endif
 
 !if "$(CFG)" == "debug"
 LDFLAGS = $(LDFLAGS_BASE)