Normalize signatures before linking

[ckaestne]

There are several cases that are compatible or even equivalent, that the linker currently complains about.

Especially, we should filter void parameters and translate arrays to pointers.

Examples

** processing arch/x86/xen **
parsing11 files
composing
 * xen_init_irq_ops when !CONFIG_XEN
    xen_init_irq_ops: (void) => void        if CONFIG_XEN       at l/arch/x86/xen/enlighten:0:0
    xen_init_irq_ops: () => void        if CONFIG_XEN       at l/arch/x86/xen/irq:0:0

** processing drivers/isdn/capi **
parsing7 files
composing
 * capi20_get_manufacturer when !CONFIG_ISDN | CONFIG_ISDN & !CONFIG_ISDN_CAPI | CONFIG_ISDN & CONFIG_ISDN_CAPI & !CONFIG_ISDN_CAPI_CAPI20 & !CONFIG_ISDN_CAPI_CAPIDRV
    capi20_get_manufacturer: (unsigned int, unsigned char[]) => unsigned short      if CONFIG_ISDN & CONFIG_ISDN_CAPI & !CONFIG_ISDN_CAPI_CAPI20 & CONFIG_ISDN_CAPI_CAPIDRV | CONFIG_ISDN & CONFIG_ISDN_CAPI & CONFIG_ISDN_CAPI_CAPI20      at l/drivers/isdn/capi/capi:0:0, l/drivers/isdn/capi/capidrv:0:0
    capi20_get_manufacturer: (unsigned int, *unsigned char) => unsigned short       if CONFIG_ISDN & CONFIG_ISDN_CAPI       at l/drivers/isdn/capi/kcapi:0:0

** processing drivers/isdn/hardware/eicon **
parsing29 files
composing
 * DIVA_DIDD_Read when !CONFIG_ISDN | CONFIG_ISDN & !CONFIG_CAPI_EICON | CONFIG_ISDN & CONFIG_CAPI_EICON & !CONFIG_ISDN_DIVAS_DIVACAPI | CONFIG_ISDN & CONFIG_CAPI_EICON & CONFIG_ISDN_DIVAS_DIVACAPI & !CONFIG_ISDN_DIVAS
    DIVA_DIDD_Read: (*struct {Map()}, signed int) => void       if CONFIG_ISDN & CONFIG_CAPI_EICON & CONFIG_ISDN_DIVAS_DIVACAPI     at l/drivers/isdn/hardware/eicon/capifunc:0:0
    DIVA_DIDD_Read: (*void, signed int) => void     if CONFIG_ISDN & CONFIG_CAPI_EICON & CONFIG_ISDN_DIVAS      at l/drivers/isdn/hardware/eicon/dadapter:0:0

** processing drivers/video/sis **
parsing5 files
composing
 * SiS_SetCH70xxANDOR when !CONFIG_FB_SIS
    SiS_SetCH70xxANDOR: (*struct SiS_Private, unsigned short, unsigned char, unsigned short) => void        if CONFIG_FB_SIS        at l/drivers/video/sis/init301:0:0
    SiS_SetCH70xxANDOR: (*struct SiS_Private, unsigned short, unsigned char, unsigned char) => void     if CONFIG_FB_SIS        at l/drivers/video/sis/sis_main:0:0

[joliebig]

Push issue. When creating a linking interface for OpenSSL we frequently run into this issue and its a tedious job to rewrite the code so that linking errors do not occur anymore.

[ckaestne]

for future reference: http://www.spinellis.gr/pubs/jrnl/1993-JCLT-CType/html/tsl.html