Bump libmongoc to latest version (#1152)

* PHPC-1420: Fix stack smashing when using mixed replica set config

* Support new debug assertion switch for libmongoc

* Only set MONGOC_ENABLE_DEBUG_ASSERTIONS when compiling against bundled libs

Author: alcaeus

config.m4

@@ -365,6 +365,12 @@ if test "$PHP_MONGODB" != "no"; then
       AC_SUBST(MONGOC_ENABLE_CLIENT_SIDE_ENCRYPTION, 0)
     fi
 
+    if test "$PHP_MONGODB_DEVELOPER_FLAGS" = "yes"; then
+      AC_SUBST(MONGOC_ENABLE_DEBUG_ASSERTIONS, 1)
+    else
+      AC_SUBST(MONGOC_ENABLE_DEBUG_ASSERTIONS, 0)
+    fi
+
     dnl On MacOS, use gcut from the coreutils brew package instead of cut
     dnl Generated with: find src/libmongoc/src/common -name '*.c' -print0 | cut -sz -d / -f 5- | sort -dz | tr '\000' ' '
     PHP_MONGODB_COMMON_SOURCES="common-b64.c common-md5.c common-thread.c"
@@ -412,6 +418,7 @@ if test "$PHP_MONGODB" != "no"; then
     ac_config_dir=PHP_EXT_SRCDIR(mongodb)
 
     AC_CONFIG_FILES([
+      ${ac_config_dir}/src/libmongoc/src/common/common-config.h
       ${ac_config_dir}/src/libmongoc/src/libbson/src/bson/bson-config.h
       ${ac_config_dir}/src/libmongoc/src/libbson/src/bson/bson-version.h
       ${ac_config_dir}/src/libmongoc/src/libmongoc/src/mongoc/mongoc-config.h

config.w32

@@ -174,6 +174,7 @@ if (PHP_MONGODB != "no") {
     MONGOC_ENABLE_COMPRESSION_ZLIB: 0,
     MONGOC_ENABLE_COMPRESSION_ZSTD: 0,
     MONGOC_ENABLE_COMPRESSION: 0,
+    MONGOC_ENABLE_DEBUG_ASSERTIONS: 0,
     MONGOC_ENABLE_MONGODB_AWS_AUTH: 0,
     MONGOC_ENABLE_SASL: 0,
     MONGOC_ENABLE_SASL_CYRUS: 0,
@@ -352,6 +353,12 @@ if (PHP_MONGODB != "no") {
     mongoc_opts
   );
 
+  mongodb_generate_header(
+    configure_module_dirname + "/src/libmongoc/src/common/common-config.h.in",
+    configure_module_dirname + "/src/libmongoc/src/common/common-config.h",
+    mongoc_opts
+  );
+
   mongodb_generate_header(
     configure_module_dirname + "/src/libmongoc/src/libmongoc/src/mongoc/mongoc-version.h.in",
     configure_module_dirname + "/src/libmongoc/src/libmongoc/src/mongoc/mongoc-version.h",

src/LIBMONGOC_VERSION_CURRENT

@@ -1 +1 @@
-1.17.0-rc0
+1.18.0-20200727+git60267532b6