Upgrade libxml2 and its portage dependencies

dev-libs/libxml2/files/libxml2-2.7.1-catalog_path.patch

Index: dev-libs/libxml2/files/libxml2-2.7.1-catalog_path.patch
diff --git a/dev-libs/libxml2/files/libxml2-2.7.1-catalog_path.patch b/dev-libs/libxml2/files/libxml2-2.7.1-catalog_path.patch
new file mode 100644
index 0000000000000000000000000000000000000000..25ea47832b0e4f49f2906f6d78106b3a9b9b831a
--- /dev/null
+++ b/dev-libs/libxml2/files/libxml2-2.7.1-catalog_path.patch
@@ -0,0 +1,66 @@
+--- catalog.c
++++ catalog.c
+@@ -68,10 +68,10 @@
+ #define XML_URN_PUBID "urn:publicid:"
+ #define XML_CATAL_BREAK ((xmlChar *) -1)
+ #ifndef XML_XML_DEFAULT_CATALOG
+-#define XML_XML_DEFAULT_CATALOG "file:///etc/xml/catalog"
++#define XML_XML_DEFAULT_CATALOG "file://@GENTOO_PORTAGE_EPREFIX@/etc/xml/catalog"
+ #endif
+ #ifndef XML_SGML_DEFAULT_CATALOG
+-#define XML_SGML_DEFAULT_CATALOG "file:///etc/sgml/catalog"
++#define XML_SGML_DEFAULT_CATALOG "file://@GENTOO_PORTAGE_EPREFIX@/etc/sgml/catalog"
+ #endif
+ 
+ #if defined(_WIN32) && defined(_MSC_VER)
+@@ -76,7 +76,7 @@
+ 
+ #if defined(_WIN32) && defined(_MSC_VER)
+ #undef XML_XML_DEFAULT_CATALOG
+-static char XML_XML_DEFAULT_CATALOG[256] = "file:///etc/xml/catalog";
++static char XML_XML_DEFAULT_CATALOG[256] = "file://@GENTOO_PORTAGE_EPREFIX@/etc/xml/catalog";
+ #if defined(_WIN32_WCE)
+ /* Windows CE don't have a A variant */
+ #define GetModuleHandleA GetModuleHandle
+--- xmlcatalog.c
++++ xmlcatalog.c
+@@ -43,7 +43,7 @@
+ 
+ 
+ #ifndef XML_SGML_DEFAULT_CATALOG
+-#define XML_SGML_DEFAULT_CATALOG "/etc/sgml/catalog"
++#define XML_SGML_DEFAULT_CATALOG "@GENTOO_PORTAGE_EPREFIX@/etc/sgml/catalog"
+ #endif
+ 
+ /************************************************************************
+--- runtest.c
++++ runtest.c
+@@ -2747,7 +2747,7 @@
+  */
+ static int
+ uripMatch(const char * URI) {
+-    if ((URI == NULL) || (!strcmp(URI, "file:///etc/xml/catalog")))
++    if ((URI == NULL) || (!strcmp(URI, "file://@GENTOO_PORTAGE_EPREFIX@/etc/xml/catalog")))
+         return(0);
+     /* Verify we received the escaped URL */
+     if (strcmp(urip_rcvsURLs[urip_current], URI))
+@@ -2766,7 +2766,7 @@
+  */
+ static void *
+ uripOpen(const char * URI) {
+-    if ((URI == NULL) || (!strcmp(URI, "file:///etc/xml/catalog")))
++    if ((URI == NULL) || (!strcmp(URI, "file://@GENTOO_PORTAGE_EPREFIX@/etc/xml/catalog")))
+         return(NULL);
+     /* Verify we received the escaped URL */
+     if (strcmp(urip_rcvsURLs[urip_current], URI))
+--- xmllint.c
++++ xmllint.c
+@@ -103,7 +103,7 @@
+ #endif
+ 
+ #ifndef XML_XML_DEFAULT_CATALOG
+-#define XML_XML_DEFAULT_CATALOG "file:///etc/xml/catalog"
++#define XML_XML_DEFAULT_CATALOG "file://@GENTOO_PORTAGE_EPREFIX@/etc/xml/catalog"
+ #endif
+ 
+ typedef enum {