quassel-irssi: Update to newer version to fix compilation

This is the irssi-abi-8 branch that was not merged back to master but is
necessary for compilation. As it touches a submodule, I can't add a patch
for it. But I can backport all of the master commits.

Get rid of quasselc dependency as it's now a submodule.

Signed-off-by: Rosen Penev <rosenp@gmail.com>

net/quassel-irssi/patches/001-respect-cflags.patch

@@ -1,5 +1,3 @@
-diff --git a/core/Makefile b/core/Makefile
-index 6133087..389855c 100644
 --- a/core/Makefile
 +++ b/core/Makefile
 @@ -3,7 +3,7 @@ DESTDIR ?=
@@ -11,12 +9,12 @@ index 6133087..389855c 100644
  IRSSI_LIB?=$(DESTDIR)/$(LIBDIR)/irssi
  IRSSI_CFLAGS+=-I$(IRSSI_INCLUDE)/src/
  IRSSI_CFLAGS+=-I$(IRSSI_INCLUDE)/src/core/
-@@ -26,7 +26,7 @@ else
+@@ -27,7 +27,7 @@ else
      LDFLAGS += -lquasselc
  endif
  
 -CFLAGS=-std=gnu11 -Wall -Wextra -Werror -g -O2 $(IRSSI_CFLAGS) $(QUASSELC_FLAGS) -Wmissing-prototypes -Wmissing-declarations
 +CFLAGS+=-std=gnu11 -Wall -Wextra -Werror -g $(IRSSI_CFLAGS) $(QUASSELC_FLAGS) -Wmissing-prototypes -Wmissing-declarations
  
- TARGET=libquassel_core.so
- 
+ CFLAGS += $(SSL_CFLAGS)
+ LDFLAGS+= $(SSL_LDLAGS)